The present work also implies the photoionization cross-section oscillations of C60 have different origins for different photon energy regions.
本文还指出不同光子能量区域C60的光电离截面振荡有不同的原因。
In the second part, using the wave function and binding energy obtained from the first part, the photoionization cross-section of the impurity is calculated.
在第二部分，我们采用第一部分所选的变分波函数和得到的束缚能进一步计算了类氢杂质体系的光致电离截面。
The important role of collective excitation in the photoionization cross-section of C60 is suggested. Improvement of the model by taking into account the collective excitation is indicated.
然而，理论和实验的一些偏离表明集体激发在C60光电离截面中起重要作用，考虑集体激发的改进模型是必要的。
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